How many meters of cloth 5m wide will be required to make a conical tent, the radius of whose base is 7m and whose height is 24m?(p=22/7)
After travelling 30 min, a train met with an accident and was stopped there for 45 min. Due to the accident, its speed reduced to 2/3 of its former speed and the train reached its destination 1 hr 30 min late. Had the accident occurred 60 km after the point it occurred earlier, the train would have reached 30 min earlier. The length of the journey is?
A. endo ergic
B. exo ergic
C. exo thermic
D. endo thermic